Ore-sampling machine.



Patented Sept. l0, 190i.

A. C. CALKINS. ORE SAMPLING MACHINE.

2Sheefs-Sheet I.

(Application filed Nov. 19, 1900.!

(No Model.)

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No. 632,528. Patented Sept. l0, I90l.

V A. C. CALKINS. ORE SAMPLING MACHINE.

Appl t max 19 1900 2 Sheets-Sheet 2.

(No Model.)

A TTORNE YS UNITED STATES PATENT QEETCE.

ALBERT O. CALKINS, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO FREDERICK W.BRAUN, OF SAME PLACE.

ORE-SAMPLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 682,528, datedSeptember 10, 1901.

Application filed November 19,1900. fierial No. 36,990. (No model.)

To ctZZ whom, Lima/y concern:

Be it known that I, ALBERT O. CALKINS, of Los Angeles, in the county ofLos Angeles and State of California, have invented a new and usefulImprovement in Ore-Sampling Machines, of which the following is aspecification.

My invention is in thenature of an improved sampling-machine designedmore especially for the use of assayers for rapidly and efficientlymixing and subdividing a quantity of pulverized ore, of which arepresentative sample may be desired, but which machine is alsoapplicable for mixing and sampling or subdividing any kind of material,as is frequently required in the drug trade.

My invention consists in the peculiar construction and arrangement ofthe various buckets B C. The buckets are under the' hopper, and one ofthe buckets, O, is under the other, B. These buckets haveradialpartitions, forming four divisions each. (See Figs. 3and 4.) Two ofthese divisions in each bucket are closed at the bottom and two areopen. The open pockets in each bucket are directly opposite each other,as are the closed pockets directly opposite each other. The upper andlower buckets are substantially identical in size and arrangement of thedivisions and openings, the only difference between them being theprovision made for fastening the buckets one over the other. The upperone, B, has a central cone (9, that distributes the stream of ore, andit sits on and is fastened to a bevel-pinion b, which rotates it in onedirection, While the other bucket O is suspended under its mate fromanother bevel-pinion c and is rotated by means of an intermediatebevel-gear d in an and is actuated by a crank E on a shaft pass ingthrough a frame-coupling F and the gearbracket D. The hopper whichdischarges into the top bucket receives four jolts or shakes to eachrevolution of the crank by means of a square cam e on the crank-shaftbumping a rod Gr, connected to the hopper A. The material being sampledis gradually jolted out of the hopper into the upper bucket on the apexof the cone, thence half of what is discharged into the upper bucketpasses into the lower bucket. This half is again divided into half bythe lower bucket. One quarter of the amount originally put into themachine is discharged from the lower bucket onto the floor or into areceptacle provided for the purpose and another quarter remains in thelower bucket. The four pockets in each bucket divide the ore intoquarters, and the two diagonally opposite pocket-s being open allow thetwo diagonally opposite quarterings to pass through into the lowerbucket, where the same office is performed. Thus the two diagonallyopposite quarterings are held up and the other two quarterings, whichare diagonally opposite to each other, are passed through. Thus it maybe readily seen that this machine not only thoroughly mixes the chargesby a centrifugal action, but accurately quarters it.

The machine is verysimple in construction. The buckets and hopper are ofsheet metal, and the frame consists of a gear-bracket D, one end ofwhich, F, unites two pieces of iron pipe S S, which form the standard.The bottom of the lower pipe fits into a floor-flange, which forms thebase or footing of the machine. The hopper is pivoted to the top of theupper pipe, the four-phase cam e is cast to the crank, and the crank isfastened to the shaft of the intermediate gear, which shaft passeslongitudinally through a hole or bearing in the gear-brack t D. Anextended flange d is cast on the gear-bracket D, which preventsthecentrifugal force from scattering the material leaving the upperbucket and insures that it falls into the lower bucket. The upper edgeof this shield extends upward and around the bottom of the upper bucket,

and the lower edge of the shield extends downward within the top of thelower bucket.

The central hub of the gear-bracket has a screw 8, that holds thevertical shaft 8, that forms the axis of the upper and lower bevelgears.

The shake-rod G is of steel and has an eye at its upper end connectingwith the hopper, and the lower end makes a right-angle bend around thecam (see Fig. 2) and fastens to an adjusting-pin p or stud by means ofan eye and cotter-pin. The lug Z, which holds the pin, isslottedvertically, so that the pin' carrying the lower end of the shake-rod maybe slipped up or down, thus bringing the bent end of the shake-rod asnear to or far from the cam as is necessary to give the degree of shakedesired. The lower end and angle bend of the shake-rod are'tempered toprevent the rodpfrom bending and thusesc'aping the cam.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- l.v -In a mixing and subdividingapparatus, the. combination of abucket having a-series of compartmentsdisposed around the center a portion of which are open at the bottom,and gears for rotating the bucket located in the vertical center of thebucket and inside the circle of the discharge-openings substantially asdescribed.

2. Ina mixing and subdividing apparatus, the combination of two bucketsarranged one above the other and having a series of compartmentsdisposed in. a circle about thecenter a portion of which are open at thebottom, and double-actingv gears for rotating the buckets in oppositedirections, said gears being located centrally inside the circle of thedischarge-openings andv between the buckets substantially as described.

3. A mixing and subdividing apparatus comprising two buckets or chambershaving radial partitions forming compartments a part of which are openat the bottom-and a part closed, the buckets being arranged one" abovethe other and discharging from one into the other, and means forrotating the buckets in opposite direction substantially asdescribed.

4. A mixing and subdividing apparatus, comprising two buckets havingradial partitions forming chambers with openings at the bottom, and adouble-acting gear arranged between and in central relation to the twobuckets to rotate them in opposite directions substantially asdescribed.

5. A mixing and subdividing apparatus comprising a standard made inv twosections,

acoupling connecting the same and formed above and outside the loweredge of the upper bucket, and arranged inside the outer wall of thelower bucket, substantially as described.

7. In a mixingand subdividing apparatus,

the combination of two reversel-y-rot-ating,

buckets having openings in the bottom, reversely-operating gears forthesame, an osoillating hopper arranged abovethe-buckets, a shaft forrotating the gears, anda-cam and rod forimparting motion from the shafttothe oscillating hopper substantially as-described.

8. In a mixing and subdividing apparatus, the combinationof a frame Dsupported at one side and having acentral' vertical shaft 3, incombinationwitha bevel-gear b with closed hub 12 and pendentcovering-flange b and asurmounting bucket having radial partitions andbottom, openings and a driving gear-wheel housed and covered by theflange 3 19 substantially as described.

9. In a mixing and subdividing'apparatus, thecombination of a frame Dsupported at one side and having a central vertical shaft 3', a buckethaving a flanged gear-wheel attached to its lower side and mounted onthe upper end of the shaft, a second bucket with gear-wheel attachedtothe'upper part of the same and sustained upon the lower end of saidshaft, and an intermediate driving-gear for rotating the two buckets inopposite directionssubstantially asdescribed.

10. In a mixing and subdividing apparatus, the-combination with arevolving bucket, and

itsgears and supporting-frame; of a hollow vertical standard withcoupling F a horizontal drive-shaft passing through said couplingand'having a cam, arod operated upon by said cam, and an oscillatinghopper connected tothe rod substantially as-described.

l1. Inamixingand subdividingapparatus, the combination withtherotary'buckets, and the crank-shaft. having cam e; of thecoupling-section F having stud Z with slot in its end, the pin p, thebent rod G' jointed to the pin and extending horizontally past the camto be acted upon by the same, and thence extended upwardly, and anoscillating hopper connected to the upper end of said rod, substantiallyas described.

ALBERT O. OALKINS. Witnesses:

F. W. BRAUN, J. B. SMITH.

